Potassium ion recognition by 15-crown-5 functionalized CdSe/ZnS quantum dots in H2O

Chun-Yen Chen; Chiu-Ting Cheng; Chih-Wei Lai; Pei-Wen Wu; Kun-Chan Wu; Pi-Tai Chou; Yi-Hsuan Chou; Hsin-Tien Chiu

doi:10.1039/B512677K

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Potassium ion recognition by 15-crown-5 functionalized CdSe/ZnS quantum dots in H₂O†

Chun-Yen Chen,^a Chiu-Ting Cheng,^a Chih-Wei Lai,^a Pei-Wen Wu,^a Kun-Chan Wu,^a Pi-Tai Chou,*^a Yi-Hsuan Chou^b and Hsin-Tien Chiu^b

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* Corresponding authors

^a Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
E-mail: chop@ntu.edu.tw
Fax: +886 (2) 2369 5208
Tel: +886 (2) 2364 3876 ext. 3988

^b Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan

Abstract

Based on 15-crown-5 functionalized CdSe/ZnS quantum dots (QDs), we report a novel fluorogenic sensor to probe K⁺ ions in H₂O; recognition of K⁺ can be achieved via the Förster type of energy transfer between two different color QDs, so that [K⁺] of the order of 10⁻⁶ M can be promptly detected.

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Supplementary files

Detailed syntheses and characterization and measurements. PDF (327K)

Article information

DOI: https://doi.org/10.1039/B512677K
Article type: Communication
Submitted: 08 Sep 2005
Accepted: 01 Nov 2005
First published: 24 Nov 2005

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Chem. Commun., 2006, 263-265

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Potassium ion recognition by 15-crown-5 functionalized CdSe/ZnS quantum dots in H₂O

C. Chen, C. Cheng, C. Lai, P. Wu, K. Wu, P. Chou, Y. Chou and H. Chiu, Chem. Commun., 2006, 263 DOI: 10.1039/B512677K

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